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'[PICLIST] ICSP programming of PIC16F627SO'
2001\02\08@191012 by Harold M Hallikainen

picon face
       I have a project using the above chip where yields are terrible
(60-70%). We are currently programming the part before putting it on the
board. There APPEARS to be a software problem, as the board seems to
crash when I start sending data to it. However, if I make a board with a
DIP socket wire wrapped onto it so I can do crash and burn debugging, it
works fine. Difficult to debug when I can't find the problem!
       So, what I'd like to do is put the SO part down on the board, then
program it. If it crashes, I'll mess with my code and reprogram it 'til I
get it to work reliably.
       We have a PRO MATE programmer (not a PRO MATE II), which does not
support the Microchip ICSP module. Anyone have suggested solutions here?
The one I have so far is to buy a PRO MATE II and the ICSP module. Anyway
I can come in under the $1K or so that entails?


Thanks!

Harold



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2001\02\08@195005 by hard Prosser

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face
You could try programming with a PICSTART.
Since the wire wrap version works OK - I guess you've checked that the
oscillator on the failing units are working reliably- the stray capacitance
of the wirewrap and/or a scope probe doesn't suddenly make it all happen
for you?

Richard P



     I have a project using the above chip where yields are terrible
(60-70%). We are currently programming the part before putting it on the
board. There APPEARS to be a software problem, as the board seems to
crash when I start sending data to it. However, if I make a board with a
DIP socket wire wrapped onto it so I can do crash and burn debugging, it
works fine. Difficult to debug when I can't find the problem!
       So, what I'd like to do is put the SO part down on the board, then
program it. If it crashes, I'll mess with my code and reprogram it 'til I
get it to work reliably.
       We have a PRO MATE programmer (not a PRO MATE II), which does not
support the Microchip ICSP module. Anyone have suggested solutions here?
The one I have so far is to buy a PRO MATE II and the ICSP module. Anyway
I can come in under the $1K or so that entails?


Thanks!

Harold



FCC Rules Online at http://hallikainen.com/FccRules
Lighting control for theatre and television at http://www.dovesystems.com

________________________________________________________________
GET INTERNET ACCESS FROM JUNO!
Juno offers FREE or PREMIUM Internet access for less!
Join Juno today!  For your FREE software, visit:
dl.http://www.juno.com/get/tagj.

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2001\02\09@142527 by Harold M Hallikainen

picon face
       Thanks for the ideas! Yes, it COULD still be the oscillator. I'm only
running at 4 MHz using a ceramic resonator. On another board I'm using
the same chip in a DIP package with the same resonator and have not had
any problems. I tried a surface mount resonator and found that it started
working when I put a scope on the oscillator output pin. That's when I
moved to surface mounting the SIP resonator.  At this point, the boards
seem to start up ok, but when I start sending serial data to them (and
they respond), they crash. PERHAPS the oscillator is dying when I start
sending data (pulling the supply down a little? I've got a 1 uF ceramic
SMT chip right at the PIC). Anyway, I'll try watching the oscillator
during a crash and see if that's the problem.
       I think I've got a PICSTART somewhere, but it's real old. I doubt it
handles the PIC16F627. Does the latest PICSTART do ICSP of these chips?

Thanks!

Harold


On Fri, 9 Feb 2001 13:30:51 +1300 Richard Prosser
<spam_OUTRichard.ProsserTakeThisOuTspamENERGY.INVENSYS.COM> writes:
{Quote hidden}

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2001\02\09@175044 by Mike Mansheim

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>>
       We have a PRO MATE programmer (not a PRO MATE II), which does not
support the Microchip ICSP module. Anyone have suggested solutions here?
The one I have so far is to buy a PRO MATE II and the ICSP module. Anyway
I can come in under the $1K or so that entails?
<<

We use a Promate II without the ICSP module to do ICSP programming all
the time; I would imagine the same would also work with your Promate.

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2001\02\09@180903 by Harold M Hallikainen

picon face
       Looks like the Promate is not really supposed to ICSP. Anyone have
documentation indicating otherwise? Below is a message from the Microchip
website.

Harold



Topic:
     Promate and ICSP (2 of 2), Read 66 times
Conf:
     Programmers (PRO MATE, PICSTART)
From:
     Jim Pepping .....jim.peppingKILLspamspam.....microchip.com
Date:
     Friday, March 10, 2000 08:08 AM


The ICSP socket module will only work with Promate II. Promate does not
have the necessary
circuitry to work with the older Promaster or Promate.

The message you are seeing is a failure of the power on self test. We
have added more
documentation on these tests in the latest version of the Promate II
users guide.

Jim

On Fri, 9 Feb 2001 16:47:11 -0600 Mike Mansheim
<EraseMEMichael_J_Mansheimspam_OUTspamTakeThisOuTGRACO.COM> writes:
{Quote hidden}

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